---
id: CVE-2026-46004
title: 'ALSA: caiaq: Handle probe errors properly'
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  ALSA: caiaq: Handle probe errors properly

  The probe procedure of setup_card() in caiaq driver doesn't treat the
  error cases gracefully, e.g. the error from snd_card_re…
severity: none
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= 8e3cd08ed8e590952aa9a656758cb24d4ba898f8 <
    da938aa9fc7826901921dcea225948ab21a97e45
  - >-
    Linux >= 8e3cd08ed8e590952aa9a656758cb24d4ba898f8 <
    09616e25f502080ba684fc7fcf959d1376ab756d
  - >-
    Linux >= 8e3cd08ed8e590952aa9a656758cb24d4ba898f8 <
    b956e48371f2ff72b76be9a829800ecec963bd45
  - >-
    Linux >= 8e3cd08ed8e590952aa9a656758cb24d4ba898f8 <
    f537e3ad69609f6924a4db6b4a7f6561f5288bdd
  - >-
    Linux >= 8e3cd08ed8e590952aa9a656758cb24d4ba898f8 <
    6251e3e256337a30160ef59ab1580dde4d1acd28
  - >-
    Linux >= 8e3cd08ed8e590952aa9a656758cb24d4ba898f8 <
    e59ecd4ee3a450db6cb4e4ecaa3efdd593f80056
  - >-
    Linux >= 8e3cd08ed8e590952aa9a656758cb24d4ba898f8 <
    096dd8519cf2f768e9e14f224b627f7aaee1a9c5
  - >-
    Linux >= 8e3cd08ed8e590952aa9a656758cb24d4ba898f8 <
    28abd224db4a49560b452115bca3672a20e45b2f
  - Linux 2.6.25
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-11-06T16:04:49.755474Z'
published: '2026-05-27'
updated: '2026-11-06'
sourceUpdated: '2026-11-06T16:13:31.429Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-46004'
references:
  - url: 'https://git.kernel.org/stable/c/da938aa9fc7826901921dcea225948ab21a97e45'
  - url: 'https://git.kernel.org/stable/c/09616e25f502080ba684fc7fcf959d1376ab756d'
  - url: 'https://git.kernel.org/stable/c/b956e48371f2ff72b76be9a829800ecec963bd45'
  - url: 'https://git.kernel.org/stable/c/f537e3ad69609f6924a4db6b4a7f6561f5288bdd'
  - url: 'https://git.kernel.org/stable/c/6251e3e256337a30160ef59ab1580dde4d1acd28'
  - url: 'https://git.kernel.org/stable/c/e59ecd4ee3a450db6cb4e4ecaa3efdd593f80056'
  - url: 'https://git.kernel.org/stable/c/096dd8519cf2f768e9e14f224b627f7aaee1a9c5'
  - url: 'https://git.kernel.org/stable/c/28abd224db4a49560b452115bca3672a20e45b2f'
tags:
  - cve.org
epss: 0.00129
epssPercentile: 0.02579
ingestedAt: '2026-11-06T16:57:43.352Z'
---

## Overview

In the Linux kernel, the following vulnerability has been resolved:

ALSA: caiaq: Handle probe errors properly

The probe procedure of setup_card() in caiaq driver doesn't treat the
error cases gracefully, e.g. the error from snd_card_register() calls
snd_card_free() but continues.  This would lead to a UAF for the
further calls like snd_usb_caiaq_control_init(), as Berk suggested in
another patch in the link below.

However, the problem is not only that; in general, this function drops
the all error handlings (as it's a void function) although its caller
can propagate an error to snd_probe(), which eventually calls
snd_card_free() as a proper error path.  That said, we should treat
each error case in setup_card(), and just return the error code
promptly, which is then handled later as a fatal error in snd_probe().

This patch achieves it by changing the setup_card() to return an error
code.  Also, the superfluous snd_card_free() call is removed, too.

Note that card->private_free can be set still safely at returning an
error.  All called functions in card_free() have checks of the
unassigned resources or NULL checks.

## Affected

- `Linux >= 8e3cd08ed8e590952aa9a656758cb24d4ba898f8 < da938aa9fc7826901921dcea225948ab21a97e45`
- `Linux >= 8e3cd08ed8e590952aa9a656758cb24d4ba898f8 < 09616e25f502080ba684fc7fcf959d1376ab756d`
- `Linux >= 8e3cd08ed8e590952aa9a656758cb24d4ba898f8 < b956e48371f2ff72b76be9a829800ecec963bd45`
- `Linux >= 8e3cd08ed8e590952aa9a656758cb24d4ba898f8 < f537e3ad69609f6924a4db6b4a7f6561f5288bdd`
- `Linux >= 8e3cd08ed8e590952aa9a656758cb24d4ba898f8 < 6251e3e256337a30160ef59ab1580dde4d1acd28`
- `Linux >= 8e3cd08ed8e590952aa9a656758cb24d4ba898f8 < e59ecd4ee3a450db6cb4e4ecaa3efdd593f80056`
- `Linux >= 8e3cd08ed8e590952aa9a656758cb24d4ba898f8 < 096dd8519cf2f768e9e14f224b627f7aaee1a9c5`
- `Linux >= 8e3cd08ed8e590952aa9a656758cb24d4ba898f8 < 28abd224db4a49560b452115bca3672a20e45b2f`
- `Linux 2.6.25`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.